Sequin device

ABSTRACT

A sequin device which is mounted on a side portion of a head of a sewing machine in order to draw a sequin from a sequin roll and place the sequin on an object to be sewn while performing a cutting operation with respect to the sequin is disclosed. The sequin device can stably feed a sequin from a sequin roll provided on a support plate with a simple structure and simplify the manufacturing process and reduce manufacturing costs thereof.

BACKGROUND OF THE INVENTION

1. Field of the invention

The present invention relates to a sequin device, which is mounted on aside portion of a head of a sewing machine in order to draw a sequinfrom a sequin roll and place the sequin on an object to be sewn whileperforming a cutting operation with respect to the sequin, and moreparticularly to a sequin device, which can stably feed a sequin from asequin roll provided on a support plate with a simple structure andsimplify the manufacturing process and reduce manufacturing coststhereof.

2. Description of the Prior Art

As generally known in the art, a sequin (or a spangle) is made of asynthetic resin film having a predetermined width and is fabricated in acircular shape formed at a center thereof with a hole having apredetermined size. A sequin roll used for sewing work is obtained bycombining plural sequins in series. Sequins drawn from the sequin rollare cut one by one by means of a sequin sewing device in such a mannerthat the sequins can be fixed to an object to be sewn.

Japanese Unexamined Patent Publication No. 2004-167097 discloses aconventional sequin sewing device.

The conventional sequin sewing device disclosed in the above JapaneseUnexamined Patent Publication places sequins on the upper surface of asupport plate by releasing the sequins from a sequin roll wound around areel and feeds the sequins in a predetermined pitch unit correspondingto the size of one sequin according to the operation of a transferlever. In addition, the conventional sequin device cuts the sequinsdrawn from the sequin roll one by one in combination with the up/downmovement of a needle bar of the sewing device and applies the sequins toan object to be sewn.

FIG. 1 is a view illustrating the conventional sequin sewing device 1attached to a head part of a sewing device disclosed in the aboveJapanese Unexamined Patent Publication, and FIG. 2 is a partiallyenlarged perspective view illustrating the detailed structure of thesequin device 5 provided in the sequin sewing device 1 shown in FIG. 1.As shown in FIGS. 1 and 2, the sequin sewing device 1 includes a baseblock 3, which is installed on a side portion of a head 2 of the sewingdevice using bonding units and a plurality of link structures, a reelholder 4 rotatably installed at an upper portion of the base block 3 soas to fix a reel, around which a sequin roll is wound, and the sequindevice 5, which is installed at the lower portion of the base block 3 soas to feed sequins released from the reel in a predetermined pitch unitusing a plurality of mechanical devices.

The sequin sewing device 1 is installed using a plurality of linkstructures and cylinders in such a manner that the sequin sewing device1 can reciprocate up and down with respect to the head 2 of the sewingdevice. The sequin sewing device 1 is lifted such that typicalembroidery work is not interrupted when sequin sewing work is notperformed, or is pulled down when the sequin sewing work is performed.

As shown in FIG. 2, the sequin device 5 installed at a lower end portionof the base block 3 includes a support block 6 installed at the lowerportion of the base block 3 using a coupling unit, a support plate 7horizontally installed at the lower end portion of the support block 6in order to place a sequin thereon, and a bracket 8 attached to one sideportion of the support block 6 using a bonding unit.

The support plate 7 is fabricated in the form of a rectangular plate andis formed at the center thereof with an elongated slot (not shown)having a predetermined width.

The bracket 8 is fabricated in the form of a rectangular plate having abending part such as an inclined surface formed at one side portion ofthe support block 6. A sequin press leaf spring 10 and a guide part 11are installed on front and rear lower end portions of the bracket 8 byusing coupling units, respectively.

In addition, a sequin feeding mechanism, which actually transfers andfeeds sequins drawn from the sequin roll, is installed on an innerportion of the support block 6, in which the sequin feeding mechanismmainly includes a driving motor 12 installed at the rear lateral portionof the support block 6 so as to provide a driving force for operatingthe sequin feeding mechanism, an actuating arm 13, an upper end portionof which is fixedly coupled to a driving shaft of the driving motor 12such that it can be rotated in the forward or backward directioncorresponding to the rotation degree of the driving shaft, a transferlever 16, which is rotatably coupled to the lower end portion of theactuating arm 13 by means of a hinge 14 such that the transfer lever 16can rotatably move up and down and is provided at a front end portionthereof with a first hook part 15, which engages with a center hole of asequin, in order to transfer the sequins in a predetermined pitch unitaccording to the forward or backward action thereof when the sequinsreleased from the reel are placed on the upper surface of the supportplate 7 through the guide part 11, a lock lever 18 provided at a freeend portion thereof with a second hook part 17, which can engage withthe center hole of the sequin, and a lock lever support block 19, whichsupports the lock lever 18 in such a manner that the lock lever 18 canmove up and down in the vicinity of the transfer lever 16. Herein, whenthe transfer lever 16 has transferred the sequin in a predeterminedpitch unit, the lock lever support block 19 allows the second hook part17 of the lock lever 18 to engage with the center hole of the sequinaligned next to the sequin having the center hole engaged with the firsthook part 15 of the transfer lever 16, thereby preventing the sequinfrom moving. In addition, when the transfer lever 16 moves back afterthe transfer operation for the sequin, the lock lever support block 19allows the first hook part 15 of the transfer lever 16 to engage withthe center hole of the sequin and releases the engagement between thesecond hook part 16 of the lock lever 18 and the center hole of thesequin until the sequin is transferred again.

In addition, a sequin cutter 20, which is used for cutting sequins oneby one when the sequins are drawn from the sequin roll through thesequin feeding mechanism, is installed at a front end portion of thesupport plate 7 such that the sequin cutter 20 may rotatably move up anddown.

The sequins released from the reel are introduced into the support plate7 through the guide part 11 installed at the rear side portion of thebracket 8 by means of a plurality of guide rollers. In addition, thecenter hole of the sequin is aligned corresponding to a slot hole of thesupport plate 7 by moving the position of the guide part 11 to left orright.

When the first hook part 15 and the second hook part 17 formed at thefront end portion of the transfer lever 16 and the lock lever 18 engagewith the center hole of the sequin placed on the support plate 7, theslot hole of the support plate 7 is adapted to receive front endportions.

The driving shaft of the driving motor 12 protrudes out of the centerpart of the support block 6 in such a manner that the driving shaft canbe rotated clockwise or counterclockwise, the upper end portion of theactuating arm 13 is fixed to the front end portion of the driving shaftusing a coupling unit, and the transfer lever 16 engaging with thecenter hole of the sequin is rotatably coupled to the lower end portionof the actuating arm 13 by means of a hinge 14.

In addition, the sequin cutter 20 for cutting one by one the sequinsdrawn from the sequin roll, which is provided through the sequin feedingmechanism, is mounted on the front end portion of the support plate 7such that the sequin cutter 20 may rotatably move up and down.

In addition, one end of a fourth torsion spring (not shown) is fixed tothe sequin cutter 20 so that the sequin cutter 20 is always maintainedin a retracted position because it is upwardly biased by means of thefourth torsion spring. The sequin cutter 20 moves down in corporationwith the downward movement of a needle bar so as to perform cutting workfor the sequins, and is moved up to the retracted position due to theelastic force of the forth torsion spring when the needle bar is liftedup according to the completion of the cutting work for the sequins.

One end of a first torsion spring (not shown) wound around the drivingshaft is fixed to the support block 6, and the other end of the firsttorsion spring is coupled with the actuating arm 13, so the actuatingarm 13 is pressed in the counterclockwise direction due to the elasticforce of the first torsion spring.

One end of a second torsion spring (not shown) wound around the hingepart 14 provided at the lower end portion of the actuating arm 13 isfixed to the middle portion of the actuating arm 13, and the other endof the second torsion spring is coupled with the transfer lever 16, sothe transfer lever 16 is pressed in the clockwise direction due to theelastic force of the second torsion spring. Accordingly, the first hookpart 15 provided at the front end portion of the transfer lever 16 isalways biased toward the support plate 7.

In addition, one end of a third torsion spring (not shown) installed inthe lock lever support block 19 mounted on an inner lower portion of thesupport block 6 is coupled with the lock lever support block 19, and theother end of the third torsion spring is coupled with the lock lever 18,so the lock lever 18 is biased clockwise due to the elastic force of thethird torsion spring. Accordingly, the second hook part 17 provided atthe front end portion of the lock lever 18 is always biased toward thesupport plate 7.

According to the conventional sequin device disclosed in the JapaneseUnexamined Patent Publication having the above structure, an elongatedhole (H) must be formed in the center portion of the transfer lever soas to receive the second hook part. However, it is very difficult toprecisely form the elongated hole in the center portion of the transferlever when the transfer lever is manufactured. For this reason, thenumber of manufacturing processes increases, so manufacturing costs forthe sequin device also increase.

In addition, when the transfer lever is retracted in order to transferthe next sequin in the process of sequin sewing work, the lock lever isrotatably moved upward in corporation with the transfer lever. At thistime, the sequin may interfere with the second hook part of the locklever, which is being rotatably moved upward, so that the sequin may beslightly dragged backward, so it is necessary to frequently adjust orchange the mechanical setting values in order to feed the sequins ontoan accurate position, which may cause inconvenience to workers.

In addition, the second hook part of the lock lever may be worn out whenthe sequin device has been used for a long time, so it is difficult tofirmly support the sequin hole when the sequins are cut by the sequincutter. In this case, the sequin is excessively moved toward the sequincutter because a needle pulls the sequin, so the sequin may beabnormally cut. In addition, when the error occurs in the sequin device,it is difficult to easily repair the sequin device due to its complexstructure, so the productivity of the sequin device may be lowered.

In order to solve the above problems, applicant of the present inventionhas filed a patent application disclosing the sequin device 5 having thestructure shown in FIG. 3 with Korean Intellectual Property Office,which is now registered as Korean Utility Model Registration No. 373160.The utility model discloses a sequin sewing device 1 including a baseblock 3, which is installed on a side portion of a head 2 of the sewingdevice using bonding units and a plurality of link structures, a reelholder 4, which is rotatably installed at an upper end portion of thebase block 3 so as to fix a reel, around which a sequin roll is wound,and a sequin device 5, which is installed at the lower end portion ofthe base block 3 so as to feed sequins released from the reel in apredetermined pitch unit. The sequin device 5 includes a driving motor12, which provides a driving force used for operating the sequin device5, an actuating arm 13, which is coupled with a driving shaft of thedriving motor 12 so as to rotate in a forward direction or a backwarddirection, a transfer lever 16, which is rotatably coupled to the lowerend portion of the actuating arm 13 by means of a hinge 14, and isprovided at a front end portion thereof with a first hook part 15, whichengages with a center hole of a sequin making the sequin roll, in orderto transfer the sequins in a predetermined pitch unit according to theforward or backward action thereof when the sequins released from thereel are placed on the upper surface of the support plate 7, a locklever 18 provided at a free end portion thereof with a second hook part17, which can engage with the center hole of the sequin making thesequin roll, a lock lever support block 19, which supports the locklever 18 in such a manner that the lock lever 18 can move up and down,is provided with the second hook part 17 of the lock lever 18, whichengages with a center hole of a sequin next to the sequin having thecenter hole engaging with the first hook part 15 of the transfer lever16, and securely locks the sequins when the transfer operation of thesequins is completed by the transfer lever 16, and engages the firsthook part 15 of the transfer lever 16 with the center hole of a sequinwhen the transfer lever 16 moves back after the completion of a transferoperation of the sequins and releases the engagement of the second hookpart 16 of the lock lever 18 and the center hole of the sequin until themovement of the sequins resumes, and a sequin cutter 20, which ismounted on the front end portion of the support plate 7 such that thesequin cutter 20 can rotatably move up and down and is used for cuttingthe moved sequins. According to the utility model, differently from theJapanese unexamined patent, since it is unnecessary to form an elongatedhole, into which the second hook part 17 of the lock lever 18 isinserted, at the center part of the transport lever 16, a manufacturingprocess is simplified, manufacturing costs are lowered, and it is easyto re-mount the sequin roll, so a user can conveniently perform a sequinembroidery work.

However, the sequin device disclosed in the Korean Utility Model havingthe above-described structure must exactly match the first hook part ofthe transfer lever and the second hook part of the lock lever withcenter holes of the sequins when a worker sets an initial workingenvironment for sequin sewing work in order to transfer the sequins.However, it is difficult for a novice to precisely set such an initialworking environment.

Accordingly, there are many demands for a sequin sewing device includinga sequin device having an improved structure capable of solving problemsexisting in the conventional sequin device.

SUMMARY OF THE INVENTION

Accordingly, the present invention has been made to solve theabove-mentioned problems occurring in the prior art, and an object ofthe present invention is to provide a sequin device having a structurerequiring no additional device for fixing sequins, thereby simplifyingthe structure and a manufacturing process of the sequin device andreducing the number of required parts, so that it is possible to reducemanufacturing costs.

Another object of the present invention is to provide a sequin devicehaving a simple structure allowing a worker to easily set an initialworking environment when sequin sewing work is performed.

Still another object of the present invention is to provide a sequindevice having a structure, which allows a worker to easily install andadjust the sequin device within a short period of time, therebyimproving the workability and repair and maintenance work for the sequindevice.

To accomplish the above object, according to one aspect of the presentinvention, there is provided a sequin device of a sequin sewing device,which is installed at a side portion of a head of a sewing machine inorder to release sequins from a sequin roll and perform a cuttingoperation for the sequins, the sequin device including a driving motorfor providing a driving force used for operating the sequin device, anactuating arm coupled with a driving shaft of the driving motor so as torotatably move in a counterclockwise direction or a clockwise direction,a transfer lever rotatably installed at a lower end portion of theactuating arm and provided at a front end portion of the transfer leverwith a first hook part, which engages with a center hole of the sequin,in order to transfer the sequins in a predetermined pitch unit accordingto forward or backward action of the transfer lever, and a transferlever support bar for securely fixing the sequins by downwardly biasingthe transfer lever which transfers the sequins in a predetermined pitchunit.

The transfer lever support bar is mounted on a predetermined position ofa support block such that the transfer lever support bar is movable inthe forward and backward direction, and is provided with a pressing partwhich biases the transfer lever downwardly.

The pressing part of the transfer lever support bar securely fixes thesequins by downwardly biasing the hook part of the transfer lever.

The transfer lever has a smoothly-curved protrusion part making contactwith a pressing part of the transfer lever support bar.

The pressing part of the transfer lever support bar is provided at oneside thereof with a stopper.

The sequin device further comprises a pressing roller capable ofperforming rolling movement, wherein the pressing roller is provided onthe stopper formed at one side of the pressing part of the transferlever support bar.

The pressing part of the transfer lever support bar is equipped with apressing roller capable of performing roller movement.

BRIEF DESCRIPTION OF THE DRAWINGS

The above and other objects, features and advantages of the presentinvention will be more apparent from the following detailed descriptiontaken in conjunction with the accompanying drawings, in which:

FIG. 1 is a perspective view illustrating the conventional sequin sewingdevice attached to a head part of a sewing device;

FIG. 2 is a partially enlarged perspective view illustrating thedetailed structure of a sequin device in a conventional sequin sewingdevice shown in FIG. 1;

FIG. 3 is a partially enlarged perspective view illustrating thedetailed structure of a sequin device of a conventional sequin sewingdevice constructed in order to solve a problem derived from thestructure shown in FIG. 2;

FIG. 4 is a perspective view illustrating a sequin sewing deviceaccording to an embodiment of the present invention;

FIG. 5 is a perspective view illustrating a sequin sewing device shownin FIG. 4 attached to a head part of a sewing device;

FIG. 6 is a partially enlarged perspective view illustrating thedetailed structure of a sequin device according to an embodiment of thepresent invention;

FIGS. 7 a and 7 b are views illustrating the operational states of asequin device according to an embodiment of the present invention; and

FIGS. 8 a and 8 b are views illustrating a detailed structure of asequin device according to another embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

Hereinafter, a preferred embodiment of the present invention will bedescribed with reference to the accompanying drawings.

FIG. 4 is a view illustrating a sequin sewing device according to anembodiment of the present invention, FIG. 5 is a view illustrating thesequin sewing device (shown in FIG. 4) attached to a head part of asewing device, and FIG. 6 is a partially enlarged perspective viewillustrating the detailed structure of the sequin device according to anembodiment of the present invention.

As shown in FIGS. 5 to 6, a sequin sewing device 100 includes a baseblock 300, which is mounted on a side portion of a head of a sewingdevice using bonding units and a plurality of link structures, a reelholder 200, rotatably installed at an upper portion of the base block300 so as to fix a reel, around which a sequin roll is wound, and thesequin device 400, which is installed at the lower portion of the baseblock 300 so as to feed sequins released from the reel in apredetermined pitch unit using a plurality of mechanical devices.

The sequin sewing device 100 is installed using a plurality of linkstructures and cylinders in such a manner that the sequin sewing device10 can reciprocate up and down with respect to the head of the sewingdevice. The sequin sewing device 100 is lifted such that typicalembroidery work is not interrupted when sequin sewing work is notperformed, or is pulled down when the sequin sewing work is performed.

As shown in FIG. 5, the sequin device 400 installed at a lower endportion of the base block 300 includes a support block 420, which isinstalled at the lower end portion of the base block 300 using acoupling unit, a support plate 430 horizontally formed in order to placea sequin roll on the lower end portion of the support block 420, and abracket 440 installed at one side portion of the support block 420 usinga bonding unit.

The support plate 430 is fabricated in the form of the shape of arectangular plate and is formed at the center thereof with an elongatedslot (not shown) having a predetermined width.

The bracket 440 is fabricated in the form of a rectangular plate havinga bending part such as an inclined surface formed at one side portion ofthe support block 420. A sequin press leaf spring 444 and a guide part442 are installed on front and rear lower end portions of the bracket440 by using coupling units, respectively.

In addition, a sequin feeding mechanism for actually transferring andfeeding sequins is formed at an inner portion of the support block 420,and the sequin feeding mechanism includes a driving motor 410 mounted ona rear side portion of the support block 420 and providing a drivingforce used for operating the sequin feeding mechanism, an actuating arm450 having the upper end portion fixedly coupled with a driving shaft412 of the driving motor 410 so as to rotatably move by the rotationdegree of the driving shaft 412 in a counterclockwise direction or aclockwise direction, a transfer lever 460 installed at the lower endportion of the actuating arm 450 such that it can rotate using a hingeshaft 470 in an upward direction or in a downward direction, and isprovided with a hook part 462, which engages with a center hole of asequin, positioned at the front end portion of the transfer lever 16 inorder to transfer sequins, which are extracted from the reel and placedon the upper side of the support plate 430 through the guide part 442,in a predetermined pitch unit through a forward operation or a backwardoperation, and a transfer lever support bar 490 securely fixing thesequin by biasing the transfer lever 460 downwardly with the completionof the transport operation of the sequin by the transfer lever 460.

In addition, a sequin cutter 480, which is used for cutting sequins,which are provided through the sequin feeding mechanism, one by one, isinstalled at a front end portion of the support plate 430 such that thesequin cutter 480 may rotatably move up and down.

Furthermore, the sequin cutter 480 has an elastic member (not shown)wound around the sequin cutter 480, so the sequin cutter 480 is alwaysmaintained in a retracted position because it is upwardly biased bymeans of the elastic member. The sequin cutter 480 moves down incorporation with the downward movement of a needle bar 700 so as toperform cutting work for the sequins, and is moved up to the retractedposition due to the elastic force of the elastic member when the needlebar is lifted up according to the completion of the cutting work for thesequins.

The sequins released from the reel are introduced into the support plate430 through the guide part 442 installed at the rear side portion of thebracket 440 using a plurality of guide rollers 310 and 320. In thiscase, the center hole of the sequin is aligned corresponding to a slothole of the support plate 430 by moving the position of the guide part442 to left or right.

The guide part 442 installed on the rear portion of the bracket 440 isnot used for placing the sequin roll on a predetermined position of thesupport plate 430 but used for accurately positioning at the center holeof the sequin corresponding to the slot hole of the support plate 430.

The slot hole of the support plate 430 is used for allowing the frontend portion of the transfer lever 460 to be inserted into the slot holesuch that a hook part 462 provided at the front end portion of thetransfer lever 460 can engage with the center hole of the sequin placedon the support plate 430.

A driving shaft 412 of a driving motor 410 providing a driving force forthe sequin feeding mechanism protrudes out of the center part of thesupport block 420, an upper end portion of the actuating arm 450 isfixed to the front end portion of the driving shaft 412 using a couplingunit, and the transfer lever 460 engaged with the center hole of asequin is rotatably connected to a lower end portion of the actuatingarm 450 by means of a hinge shaft 470.

In addition, an elongated slot hole 422 having a predetermined length isformed at the inner lower portion of the support block 420. A transferlever support bar 490, which is provided with a pressing part 492protruding downward from a lower end of the transfer lever support bar490 so as to securely fix a sequin roll by downwardly biasing thetransfer lever 460 after the transfer lever 460 has transferred thesequin roll in a predetermined pitch unit, is installed in the slot hole422 using a coupling unit in such a manner that the position of thetransfer lever support bar 490 can be adjusted in the forward orbackward direction. Although the present invention does not limit theshape of the transfer lever support bar 490, the transfer lever supportbar 490 preferably has a reverse-L shape as shown in FIGS. 5 to 8 b.

If necessary, the pressing part 492 of the transfer lever support bar490 may be equipped with a pressing roller performing the rollingmovement in order to minimize friction between the transfer lever 460and the pressing part 492.

In addition, an elastic member (not shown) is wound around the drivingshaft 412 of the driving motor 410, so one end of the elastic member isfixed on the support block 420, and the other end of the elastic memberis locked with the actuating arm 450, thereby biasing the actuating arm450 counterclockwise.

Furthermore, an elastic member (not shown) is wound around the hingeshaft 470 provided at the lower end portion of the actuating arm 450.One end of the elastic member is fixed to a middle part of the actuatingarm 450 and the other end of the elastic member is coupled with thetransfer lever 460, so the transfer lever 460 is biased clockwise due toan elastic force of the elastic member. Accordingly, the hook part 462provided at the front end portion of the transfer lever 460 is alwaysbiased toward the support plate 430.

Hereinafter, the operation of the sequin device according to the presentinvention having the above-described structure will be described indetail. First, a worker draws the sequin roll wound around the reel. Thefirst sequin of the sequin roll drawn from the reel is placed on thesupport plate 430 through a plurality of guide rollers 310 and 320 andthe guide part 442 and then moves back the hook part 462 of the transferlever 460 by handling a driving shaft control handle 414 provided at therear side of the driving motor 410 such that the hook part 462 mayengage with the center hole of the first sequin. After the hook part 462has engaged with the center hole of the first sequin, the sequin roll ismoved by rotating the driving shaft control handle 414 such that theforemost sequin of the sequin roll makes contact with the front endportion of the support plate 430.

When the sequin roll has transferred in a predetermined pitch unitthrough the transfer operation of the transfer lever 460, the sequinroll must be securely fixed using the transfer lever support bar 490mounted on a predetermined position of the support block 420. Thisoperation will be described below in detail with reference to FIGS. 7 aand 7 b. If the hook part 462 of the transfer lever 460 moves forward inorder to transfer the sequin roll in a state in which the hook part 462of the transfer lever 460 is engaged with the sequin hole, asmoothly-curved protrusion part 464 of the transfer lever 460 makescontact with the pressing part 492 of the transfer lever support bar 490when the sequin roll has been transferred in a predetermined pitch unit.At this time, the pressing part 492 of the transfer lever support bar490 downwardly biases the protrusion part 464 of the transfer lever 460,so the hook part 462 of the transfer lever 460 can securely support thesequin roll.

Thereafter, when the transfer lever 460 moves backward in order totransfer the next sequin, the engagement between the hook part 462 andthe center hole of the sequin is released. At this time, the protrusionpart 464 of the transfer lever 460 is separated from the pressing part492 of the transfer lever support bar 490, thereby releasing the sequinroll.

When the sequin roll has been transferred to the front end portion ofthe support plate 430 through the above procedure, the head 600 of thesewing device is operated so that the needle bar 700 moves down. Thus,the sequin cutter 480 moves down in corporation with the needle bar 700,thereby cutting the sequin. The sequin cut by the sequin cutter 480 isapplied to an object to be sewn.

In contrast, if the needle bar 700 is lifted up, the sequin cutter 480is upwardly retracted due to an elastic force of an elastic member, andthe transfer lever 460 moves back in order to transfer a new sequin.

Hereinafter, a sequin device according to another embodiment of thepresent invention will be described with reference FIGS. 8 a and 8 b.According to another embodiment of the present invention, the hook part462 of the transfer lever 460 can directly make contact with thepressing part 492 of the transfer lever support bar 490 after thetransfer lever 470 has transferred the sequin roll in a predeterminedpitch unit, in such a manner that the transfer lever 460 is downwardlybiased to fix the sequin roll. Otherwise, a stopper 494, which isfabricated in the form of a cylindrical rod, protrudes from apredetermined position of the pressing part 492 of the transfer leversupport bar 490, and makes contact with the hook part 462 of thetransfer lever 460, thereby downwardly biasing the transfer lever 460.

If necessary, the stopper 494 of the transfer lever support bar 490 maybe equipped with a pressing roller performing the rolling movement inorder to minimize friction between the transfer lever 460 and thepressing part 492.

As described above, according to the present invention having the abovestructure, since the sequin roll is transferred in a predetermined pitchunit according to transfer operation of the transfer lever in theforward and backward directions, and then the transfer lever fixes thesequin roll by means of the transfer lever support bar, it isunnecessary to employ an additional device used for fixing the sequinroll. In addition, since a rotation degree of the actuating arm can beadjusted by a worker by simply adjusting backward and forward positionsof the transfer lever support bar, it is unnecessary to employ theconventional stopper for the actuating arm and the conventionalcontact-point adjustment screw for adjusting the degree of rotation ofthe actuating arm. Accordingly, the structure of the sequin device canbe simplified, thereby simplifying the manufacturing process of thesequin device. In addition, since the number of parts used formanufacturing the sequin device can be reduced, it is possible toremarkably reduce manufacturing costs for the sequin device.

In addition, since the sequin device according to the present inventionemploys only one transfer lever so as to feed the sequins, it is easy toset the working environment of the sequin device, so even a novice canperform sequin sewing work. In addition, since a time required for thesetting up and the control of the sequin device can be reduced, it ispossible to remarkably improve the productivity of a sequin sewing work.Furthermore, it is easy to perform the maintenance of the sequin devicewhen an error occurs in the sequin device, so it is possible topreviously prevent the degradation of the productivity of the sequindevice due to the error of the sequin device.

Although a preferred embodiment of the present invention has beendescribed for illustrative purposes, those skilled in the art willappreciate that various modifications, additions and substitutions arepossible, without departing from the scope and spirit of the inventionas disclosed in the accompanying claims.

1. A sequin device of a sequin sewing device, which is installed at aside portion of a head of a sewing machine in order to release sequinsfrom a sequin roll and perform a cutting operation for the sequins, thesequin device comprising: a driving motor for providing a driving forceused for operating the sequin device; an actuating arm coupled with adriving shaft of the driving motor so as to rotatably move in acounterclockwise direction or a clockwise direction; a transfer leverrotatably installed at a lower end portion of the actuating arm andprovided at a front end portion of the transfer lever with a first hookpart, which engages with a center hole of the sequin, in order totransfer the sequins in a predetermined pitch unit according to forwardor backward action of the transfer lever; and a transfer lever supportbar for securely fixing the sequins by downwardly biasing the transferlever which transfers the sequins in a predetermined pitch unit.
 2. Thesequin device as claimed in claim 1, wherein the transfer lever supportbar is mounted on a predetermined position of a support block such thatthe transfer lever support bar is movable in the forward and backwarddirection, and is provided with a pressing part which biases thetransfer lever downwardly.
 3. The sequin device as claimed in claim 2,wherein the pressing part of the transfer lever support bar securelyfixes the sequins by downwardly biasing the hook part of the transferlever.
 4. The sequin device as claimed in claim 1, wherein the transferlever has a smoothly-curved protrusion part making contact with apressing part of the transfer lever support bar.
 5. The sequin device asclaimed in any one of claims 1 to 4, wherein the pressing part of thetransfer lever support bar is provided at one side thereof with astopper.
 6. The sequin device as claimed in claim 5, further comprisinga pressing roller capable of performing rolling movement, wherein thepressing roller is provided on the stopper formed at one side of thepressing part of the transfer lever support bar.
 7. The sequin device asclaimed in one of claims 1 to 4, wherein the pressing part of thetransfer lever support bar is equipped with a pressing roller capable ofperforming roller movement.